Mating with more than one male increases reproductive success for female prairie dogs, despite an increase in risks such as increased susceptibility to predation and increased exposure to diseases and ...

Growing tissue from cells in a petri dish is hard enough, but growing multiple types of tissue, connecting them, and keeping them alive for weeks is even more daunting. A team led by Teresa K.

In addition to obvious biological differences, male and female dogs can sometimes deal with different health issues and behaviors. Un-neutered male dogs are typically more prone to humping others and ...